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Income Taxes - Deferred Income Taxes and Other (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Deferred income tax assets: |  |
Net operating and capital loss carryforwards | $ 107.4 | $ 123.0
Tax credit carryforwards | 15.2 | 64.2
Net unrealized losses on available-for-sale securities | 1,250.2 | 1,092.9
Employee benefits | 334.3 | 315.4
Gross deferred income tax assets | 1,707.1 | 1,595.5
Valuation allowance | (71.4) | (58.8)
Total deferred income tax assets | 1,635.7 | 1,536.7
Deferred income tax liabilities: |  |
Deferred income tax liabilities: Deferred acquisition costs | (689.7) | (679.2)
Investments, including derivative assets | (217.1) | (240.9)
Funds withheld embedded derivative | (651.7) | (575.5)
Deferred income tax liabilities: Real estate | (127.1) | (136.7)
Intangible assets | (355.5) | (384.2)
Insurance liabilities | (1,008.1) | (886.1)
Other deferred income tax liabilities | (85.4) | (6.3)
Total deferred income tax liabilities | (3,134.6) | (2,908.9)
Total net deferred income tax liabilities | (1,498.9) | (1,372.2)
Net deferred income taxes by jurisdiction |  |
Net deferred income tax assets | 207.1 | 241.1
Net deferred income tax liabilities | (1,706.0) | (1,613.3)
Total net deferred income tax liabilities | (1,498.9) | (1,372.2)
Deferred income tax disclosures-operating loss carryforwards |  |
Valuation allowances on income tax benefits primarily associated with foreign net operating loss carryforwards | 71.4 | 58.8
Deferred income tax disclosures |  |
Accumulated but undistributed earnings from operations of foreign subsidiaries for which U.S. federal and state deferred income taxes have not been provided | 1,276.3 | 1,362.6
Excess book carrying value over tax basis with respect to the original investment of foreign subsidiaries for which U.S. federal and state deferred income taxes have not been provided | 106.2 |
U.S. Federal |  |
Net deferred income taxes by jurisdiction |  |
Net deferred income tax liabilities | (1,416.1) | (1,312.9)
Deferred income tax disclosures-operating loss carryforwards |  |
Net operating loss carryforwards | 16.9 | 0.0
Tax credit carryforwards | 15.2 | 64.2
Capital loss carryforwards | 69.9 | 155.2
State |  |
Net deferred income taxes by jurisdiction |  |
Net deferred income tax assets | 61.9 | 77.9
Deferred income tax disclosures-operating loss carryforwards |  |
Net operating loss carryforwards | 288.3 | 312.3
Foreign |  |
Net deferred income taxes by jurisdiction |  |
Net deferred income tax assets | 145.2 | 163.2
Net deferred income tax liabilities | (289.9) | (300.4)
Deferred income tax disclosures-operating loss carryforwards |  |
Net operating loss carryforwards | $ 264.3 | $ 257.3

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